diff options
Diffstat (limited to 'drivers/s390/crypto/zcrypt_cex2a.c')
| -rw-r--r-- | drivers/s390/crypto/zcrypt_cex2a.c | 164 |
1 files changed, 0 insertions, 164 deletions
diff --git a/drivers/s390/crypto/zcrypt_cex2a.c b/drivers/s390/crypto/zcrypt_cex2a.c index 1e849d6e1dfe..e69de29bb2d1 100644 --- a/drivers/s390/crypto/zcrypt_cex2a.c +++ b/drivers/s390/crypto/zcrypt_cex2a.c @@ -1,164 +0,0 @@ -/* - * zcrypt 2.1.0 - * - * Copyright IBM Corp. 2001, 2012 - * Author(s): Robert Burroughs - * Eric Rossman (edrossma@us.ibm.com) - * - * Hotplug & misc device support: Jochen Roehrig (roehrig@de.ibm.com) - * Major cleanup & driver split: Martin Schwidefsky <schwidefsky@de.ibm.com> - * Ralph Wuerthner <rwuerthn@de.ibm.com> - * MSGTYPE restruct: Holger Dengler <hd@linux.vnet.ibm.com> - * - * This program is free software; you can redistribute it and/or modify - * it under the terms of the GNU General Public License as published by - * the Free Software Foundation; either version 2, or (at your option) - * any later version. - * - * This program is distributed in the hope that it will be useful, - * but WITHOUT ANY WARRANTY; without even the implied warranty of - * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the - * GNU General Public License for more details. - * - * You should have received a copy of the GNU General Public License - * along with this program; if not, write to the Free Software - * Foundation, Inc., 675 Mass Ave, Cambridge, MA 02139, USA. - */ - -#include <linux/module.h> -#include <linux/slab.h> -#include <linux/init.h> -#include <linux/err.h> -#include <linux/atomic.h> -#include <asm/uaccess.h> - -#include "ap_bus.h" -#include "zcrypt_api.h" -#include "zcrypt_error.h" -#include "zcrypt_cex2a.h" -#include "zcrypt_msgtype50.h" - -#define CEX2A_MIN_MOD_SIZE 1 /* 8 bits */ -#define CEX2A_MAX_MOD_SIZE 256 /* 2048 bits */ -#define CEX3A_MIN_MOD_SIZE CEX2A_MIN_MOD_SIZE -#define CEX3A_MAX_MOD_SIZE 512 /* 4096 bits */ - -#define CEX2A_SPEED_RATING 970 -#define CEX3A_SPEED_RATING 900 /* Fixme: Needs finetuning */ - -#define CEX2A_MAX_MESSAGE_SIZE 0x390 /* sizeof(struct type50_crb2_msg) */ -#define CEX2A_MAX_RESPONSE_SIZE 0x110 /* max outputdatalength + type80_hdr */ - -#define CEX3A_MAX_RESPONSE_SIZE 0x210 /* 512 bit modulus - * (max outputdatalength) + - * type80_hdr*/ -#define CEX3A_MAX_MESSAGE_SIZE sizeof(struct type50_crb3_msg) - -#define CEX2A_CLEANUP_TIME (15*HZ) -#define CEX3A_CLEANUP_TIME CEX2A_CLEANUP_TIME - -static struct ap_device_id zcrypt_cex2a_ids[] = { - { AP_DEVICE(AP_DEVICE_TYPE_CEX2A) }, - { AP_DEVICE(AP_DEVICE_TYPE_CEX3A) }, - { /* end of list */ }, -}; - -MODULE_DEVICE_TABLE(ap, zcrypt_cex2a_ids); -MODULE_AUTHOR("IBM Corporation"); -MODULE_DESCRIPTION("CEX2A Cryptographic Coprocessor device driver, " \ - "Copyright IBM Corp. 2001, 2012"); -MODULE_LICENSE("GPL"); - -static int zcrypt_cex2a_probe(struct ap_device *ap_dev); -static void zcrypt_cex2a_remove(struct ap_device *ap_dev); - -static struct ap_driver zcrypt_cex2a_driver = { - .probe = zcrypt_cex2a_probe, - .remove = zcrypt_cex2a_remove, - .ids = zcrypt_cex2a_ids, - .request_timeout = CEX2A_CLEANUP_TIME, -}; - -/** - * Probe function for CEX2A cards. It always accepts the AP device - * since the bus_match already checked the hardware type. - * @ap_dev: pointer to the AP device. - */ -static int zcrypt_cex2a_probe(struct ap_device *ap_dev) -{ - struct zcrypt_device *zdev = NULL; - int rc = 0; - - switch (ap_dev->device_type) { - case AP_DEVICE_TYPE_CEX2A: - zdev = zcrypt_device_alloc(CEX2A_MAX_RESPONSE_SIZE); - if (!zdev) - return -ENOMEM; - zdev->user_space_type = ZCRYPT_CEX2A; - zdev->type_string = "CEX2A"; - zdev->min_mod_size = CEX2A_MIN_MOD_SIZE; - zdev->max_mod_size = CEX2A_MAX_MOD_SIZE; - zdev->short_crt = 1; - zdev->speed_rating = CEX2A_SPEED_RATING; - zdev->max_exp_bit_length = CEX2A_MAX_MOD_SIZE; - break; - case AP_DEVICE_TYPE_CEX3A: - zdev = zcrypt_device_alloc(CEX3A_MAX_RESPONSE_SIZE); - if (!zdev) - return -ENOMEM; - zdev->user_space_type = ZCRYPT_CEX3A; - zdev->type_string = "CEX3A"; - zdev->min_mod_size = CEX2A_MIN_MOD_SIZE; - zdev->max_mod_size = CEX2A_MAX_MOD_SIZE; - zdev->max_exp_bit_length = CEX2A_MAX_MOD_SIZE; - if (ap_test_bit(&ap_dev->functions, AP_FUNC_MEX4K) && - ap_test_bit(&ap_dev->functions, AP_FUNC_CRT4K)) { - zdev->max_mod_size = CEX3A_MAX_MOD_SIZE; - zdev->max_exp_bit_length = CEX3A_MAX_MOD_SIZE; - } - zdev->short_crt = 1; - zdev->speed_rating = CEX3A_SPEED_RATING; - break; - } - if (!zdev) - return -ENODEV; - zdev->ops = zcrypt_msgtype_request(MSGTYPE50_NAME, - MSGTYPE50_VARIANT_DEFAULT); - zdev->ap_dev = ap_dev; - zdev->online = 1; - ap_dev->reply = &zdev->reply; - ap_dev->private = zdev; - rc = zcrypt_device_register(zdev); - if (rc) { - ap_dev->private = NULL; - zcrypt_msgtype_release(zdev->ops); - zcrypt_device_free(zdev); - } - return rc; -} - -/** - * This is called to remove the extended CEX2A driver information - * if an AP device is removed. - */ -static void zcrypt_cex2a_remove(struct ap_device *ap_dev) -{ - struct zcrypt_device *zdev = ap_dev->private; - struct zcrypt_ops *zops = zdev->ops; - - zcrypt_device_unregister(zdev); - zcrypt_msgtype_release(zops); -} - -int __init zcrypt_cex2a_init(void) -{ - return ap_driver_register(&zcrypt_cex2a_driver, THIS_MODULE, "cex2a"); -} - -void __exit zcrypt_cex2a_exit(void) -{ - ap_driver_unregister(&zcrypt_cex2a_driver); -} - -module_init(zcrypt_cex2a_init); -module_exit(zcrypt_cex2a_exit); |